Abstract: A worktable-elevating device for a planer is assembled on a worktable, including a base body provided with an input gear unit, two output gear units; a control rod, two elastic compressing units, and a worm holder. The input gear unit is driven by a motor installed on the worktable to rotate and actuate the two output gear units to rotate reversely. The control rod is pulled upward or downward to make the worm holder mesh with one of the two output gear units. As the worm holder and the planing table are screwed on the worm of the base body; therefore when the worm holder is driven to move upward or downward, the worktable will synchronously be moved up or down quickly. When the control rod is released and automatically recovers its original position by the elastic compressing units, the worktable will stop moving up and down.

Abstract: A micro-adjusting device for the angle stop plank of a planer includes a hand wheel unit provided on the holding frame and having a worm, a transmission rod provided in the holding frame to be rotated by the worm, an upper connecting rod meshed with and actuated to move back and forth by a transmission gear fixed on one end of the transmission rod and having one end pivotally connected with a stop plank, and a lower connecting rod having its opposite ends respectively connected pivotally with the stop plank and the holding frame to form two pivotal joints serving as turning fulcrums. When the hand wheel unit is turned around, the upper connecting rod is actuated to pull or push the upper portion of the stop plank, and the lower connecting rod together with the turning fulcrums micro-adjusts the stop plank at a required angle.

Abstract: A planing machine including a base, at least two support columns disposed on the base, and a carriage assembly carrying a cutterhead. The carriage assembly may be mounted on the support columns. At least one of the base and the carriage assembly is movable vertically towards the other of the base and the carriage assembly. The planing machine may have panel mounted on at least one one of the base and the carriage assembly and extending between the carriage assembly and the base housing for preventing user contact with the cutterhead.

Abstract: A locking device for a plane machine includes a handle, an actuating rod, two side bases, an urging block respectively provided at two sides of each side base. The actuating rod is urged by a spring to bias a bit to one side of a machine base of a plane machine when the locking device is in a normal not-locking positions with the handle being in a not-pushed position, and the machine base is not locked with four posts of the plane machine. When the handle is pressed inward to a locking position, the actuating rod is moved to force the two side bases move nearer the center of the machine base, forcing the four urging blocks to tightly pushing the four posts to lock the machine base at an adjusted position after the machine base is adjusted to a needed height by means of a rotating button and a threaded rod.